text: import Vue from './instance/index'
  import { initGlobalAPI } from './global-api/index'
  import { FunctionalRenderContext } from 'core/vdom/create-functional-component'
  
  // add global API: config, util, set, delete, nextTick, options,
  // directive, filter, component, use, mixin, extend to Vue
  initGlobalAPI(Vue)
  
  // expose FunctionalRenderContext for ssr runtime helper installation
  Object.defineProperty(Vue, 'FunctionalRenderContext', {
    value: FunctionalRenderContext
  })
  
  /**
   * Details: Provides the installed version of Vue as a string. This is
   * especially useful for community plugins and components, where you might
   * use different strategies for different versions.
   */
  Vue.version = '__VERSION__'
  
  export default Vue
  